Flue-cleaner.



J. P. GULLON.

PLUE CLEANER.

APPLIOATION FILED APR. 10, 1913.

Patented not. 28, 1913.

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JOHN PERGIVAL UULLON, OF TORONTO, ONTARIO, CANADA.

BLUE-CLEANER.

Specification of Letters Patent.

Patented Oct. 28, 1913.

Application filed April 10, 1913. Serial No. 780,211.

To aZZ whom it may concern:

Be it known that I, JOHN PERCIVAL CUL- LON, of the city of Toronto, in the county of York, in the Province of Ontario, Ganada, have invented certain newand useful Improvements in Flue-Cleaners, of which the following is the specification.

My invention relates to improvements in flue cleaners, and the object of the invention is to devise a flue cleaner, which will pass collapsed portions and welded joints of a flue, in which means are provided for preventing the catching of the cleaner 011 the edge of the flue at the commencement of the return stroke, in which the plugging of the cleaner in the flue is prevented, in which the shearing power of the cutting blades of a flue cleaner is increased, and in which the cutting edges of such blades are not dulled by wear and in which easy access to the rivets is provided for the purpose of repair, and it consists essentially of the cleaner rod, a conical head secured at one end of the rod, a bell shaped head located intermediatcly of the length of the rod, arched springs connecting the conical and bell heads together, cutting blades V-shaped in form secured to the arched springs, a securing nut threaded on the cleaner rod and a compression spring extending between the nut and the bell head as hereinafter more particularly explained.

Figure 1, is a perspective view of my cleaner in position in the flue, showing the flue in section. 2, is a longitudinal section through the cleaner and flue. Fig. 3, he a cross section through the cleaner and us.

in the drawings like letters of reference indicate corresponding parts in each figure.

A is the cleaner rod provided with an outer threaded end A and an inner threaded end A connected by suitable unionjoints A to a handle A (a small portion only of which is shown).

B is a conical head preferably hexagonal in form and provided with a threaded orifice B threaded on to the threaded end A of the rod A.

C is a head provided with an opening C through which the rod freely extends. As shown in Fig. 2, the opening C is slightly larger in diameter than the diameter of the rod A. The head 0 is provided with a series of peripheral recesses C terminating at their inner ends in peripheral orifices C D is a nut threaded on to the rod A.

l) is a washer bearing against the nut and D is a compression spring extending between the washer D and the outer or small end of the bell head C. t

E are arched springs preferably three in number and secured at one end to the alternatc faces of the hexagonal head B by the rivets E. The opposite ends of the arched springs E are passed through the openings G into the recesses C in which they are secured by the rivets E F are Vshaped cutting blades, the apexes of which are turned inwardly at 1?, the opposite sides of each cutting blade being provided with inwardly beveled portions F and F and a central exterior end portion hollowed out at h thereby forming peripheral cutting edges F and F. It will thus be seen by reason of the beveled portions F and F the cutting edges F and F will remain sharp, and in fact are sharpened by the wear against the inner periphery and the flue.

F are rivets connecting the wider end of each of the cutting blades to the arched springs E.

2 is a flue.

Having now described the principal parts involved in my invention 1 shall briefly describe the operation of the same.

It will thus be understood that the flue cleaner is thrust longitudinally into the flue. If the flue is collapsed at any portion or there is a weld, which decreases the interior diameter of the line the arched springs E and compression spring D give sutiiciently to allow the cleaner to pass such reduced portion. If it is necessary to adjust the cleaner to different diameters of fines all that is necessary is to tighten the nut D against the compression spring D forcing the head 0 longitudinally and the arched springs outwardly carrying the cutting edges F and F outwardly against the interior periphery of the flue. Also by reducing the size of the front head B there is no danger of the flue cleaner clogging within the flue by reason of the scale and other matter congregating around the cleaner and plugging it up. It will also be understood that the arched springs E are so arranged that there is an open space opposite each spring and that therefore should any of the cutting blades become loose and require removal the rivets F may be tightened without the aid of any special tool or the rivet heads out oft if it is desired to entirely remove the blade.

By forming the blades V-shaped a double cutting edge is formed, whereby an obstructing portion of blade sticking to the interior of the flue when passing the cleaner in one direction is cut at an angle and is cut at an opposite angle when passing the cleaner in the opposite direction, thereby more easily severing the scale than would be the case if the cutting blades cut at the same angle both during the forward and return stroke of the cleaner.

From this description it will be seen that I have devised a very simple form of line cleaner which will readily pass collapsed portions of the tube or welded joints, which will readily return into the flue at the commencement of the return stroke of the cleaner, which will not be liable to plug in the fine and which will have increased shearing power and inwhich the blades are not liable to become dulled by use.

hat I claim as my invention is 1. In a flue cleaner a series of cutting blades arranged end to end in circumferentially and curved eccentric form, said blades being wider at one end and tapering to V-shape at the opposite end thereof and a support for said blades 2. In a flue cleaner, the combination of heads with arched springs connecting the heads together, a series of cutting blades secured to the arched springs, curving cir' cuinferentially and concentrically to the cleaner, said blades being wider at one end and tapering to V-shape at the other end thereof, said blades being arranged end to 7 end JOHN PERCIVAL GULLON. Witnesses:

B. BOYD, V. BOND.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

